Home / Keyes / 21 January 2017
Keyes
United States · 21 January 2017
← 20 January 201722 January 2017 →
Average
10.2°C
low 6.9°C · high 13.6°C
Rainfall
6.6mm
rain recorded
Wind
3.8m/s
daily average
Humidity
79.6%
daily average
Cloud
85%
cover
Pressure
1009hPa
daily average
The temperature ranged from 6.9°C around 04:00 to 13.6°C around 13:00. Rain was recorded across 12 hours, from around 04:00 to 23:00 (6.6mm total).
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
16th percentile
Low temperature
57th percentile
Rainfall
87th percentile
Wind
90th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 10.8°C, versus 10.2°C on this specific day.
Sun & daylight
Sunrise
07:14
Sunset
17:16
Day length
10h 2m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — America/Los_Angeles.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 08:00 | 8.2°C | 5.6°C | 0 | 2.2 | S | 82 | 1000 |
| 01:00 | 09:00 | 8.5°C | 6.1°C | 0 | 2.1 | S | 85 | 1001 |
| 02:00 | 10:00 | 7.6°C | 5°C | 0 | 1.9 | SSE | 83 | 1001 |
| 03:00 | 11:00 | 7.2°C | 4.6°C | 0.01 | 2 | S | 83 | 1003 |
| 04:00 | 12:00 | 6.9°C | 4.1°C | 0.22 | 2.3 | S | 85 | 1003 |
| 05:00 | 13:00 | 7.3°C | 4.7°C | 0.34 | 2 | S | 84 | 1005 |
| 06:00 | 14:00 | 7.9°C | 5.5°C | 0.44 | 2 | SSE | 84 | 1006 |
| 07:00 | 15:00 | 8.1°C | 5.5°C | 0.63 | 2.2 | SSE | 84 | 1007 |
| 08:00 | 16:00 | 8.5°C | 6.1°C | 0.19 | 2.1 | SSE | 84 | 1009 |
| 09:00 | 17:00 | 9.3°C | 6.4°C | 0.05 | 2.9 | SE | 84 | 1010 |
| 10:00 | 18:00 | 10.6°C | 7.8°C | 0.04 | 3.3 | SE | 82 | 1011 |
| 11:00 | 19:00 | 12°C | 9°C | 0.03 | 3.8 | SE | 81 | 1012 |
| 12:00 | 20:00 | 12.8°C | 9.9°C | 0.09 | 4.2 | SSE | 81 | 1012 |
| 13:00 | 21:00 | 13.6°C | 10.3°C | 0.09 | 4.5 | SE | 75 | 1012 |
| 14:00 | 22:00 | 13.1°C | 8.8°C | 0.08 | 5.1 | SE | 67 | 1012 |
| 15:00 | 23:00 | 13.2°C | 8.8°C | 0.06 | 5.3 | SE | 65 | 1013 |
| 16:00 | 00:00 | 12.9°C | 8.8°C | 0.07 | 4.8 | SE | 66 | 1013 |
| 17:00 | 01:00 | 12.8°C | 9°C | 0.15 | 4.2 | SE | 67 | 1013 |
| 18:00 | 02:00 | 12.1°C | 8°C | 0.38 | 4.8 | SE | 70 | 1013 |
| 19:00 | 03:00 | 11.1°C | 7°C | 0.89 | 5.2 | SE | 82 | 1013 |
| 20:00 | 04:00 | 10.8°C | 6.8°C | 1 | 5 | SE | 83 | 1013 |
| 21:00 | 05:00 | 10.5°C | 6.2°C | 1.47 | 5.4 | SE | 85 | 1013 |
| 22:00 | 06:00 | 10.5°C | 5.5°C | 0.24 | 6.4 | SE | 83 | 1012 |
| 23:00 | 07:00 | 10.5°C | 5.1°C | 0.17 | 6.8 | SE | 83 | 1012 |
Nearby cities
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Data source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for United States
- Location
- Keyes — 37.500°, -121.000°, ERA5 grid cell center, 9.8 km from requested point
- Time zone
- America/Los_Angeles
- What's shown here
- The hourly and daily record for 21 January 2017 specifically — not a monthly average. See the Keyes climate overview for typical conditions.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-20). Historical climate data for Keyes, United States (37.50°N, 121.00°W), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Keyes, United States [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Keyes, United States." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Keyes, United States},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.